Mega V2 Spindle Running in Reverse

[pbmegav2]

Hello,

I have a Mega V2, 35" with the Spindle/VFD (1.5kW 120V). I cannot get it to reverse the spindle direction. Tried different CNC programs, reset computer and machine etc.

Even inputting M04 Sxxx in MDI mode, it still just rotates clockwise. Am I missing something obvious, or can this not run the spindle in reverse?

[pbmegav2]

Talked with Support, and for reference, that spindle cannot be run CCW.